Spotted embracing, the couple - pictured here in 2007 - seemed very much together as they spent an evening at a jazz bar in Soho.

The news of their reunion may not be well-received by Amy's taxi driver father Mitch, however. He has previously spoken out over his concerns about his daughter's beau - partially blaming him for the singer's well-documented battle with substance abuse.

"He's not entirely responsible," admits Mitch. "She's got to take a portion of the responsibility, but it's clear, it really kicked off when they got together."

The couple originally tied the knot in Miami in 2007 and divorced in September last year.